According to Urban Dictionary "whacked" means: demented; not right in the head So, if you're dealing with someone who's obviously not "right in the head" and try to forewarn others before they could get taken advantage of by this person why do those you're trying to forewarn get all upset and get their panties in a wad over using the term "whacked". They claim it's too … [Read more...] about Whacked customers